throw assad, how dangerous would that be? >> it's dangerous and respond appropriately to what assad has done with chemical weapons. with regard to the larger task, piers, my rule of thumb here on this one right now is go big or go home. this can't be done by just putting our thumb on the scale and hoping for the best. if you want to do what the senator is recommending, it would require a major effort and sustained effort on the part of the united states. >> robin wright, again, briefly, if you don't mind, if you were president obama, what do you do and how soon do you do it? >> well, this is the problem, i mean, he's going to the g 20 group of industrialized nations leaving tuesday night and so, clearly, he's trying to either act before this happens, sunday, monday, perhaps after the u.n. and weapons inspectors come out or another vote in parliament or wait until after he gets back and consultations.